Hi friends,
I am a beginner. I typed a program and after translating i get no error. But i get an error as shown below, while building hex file for that program.
The error is
filename.sct(7): error: L6236E: No section matches selector - no section to be FIRST/LAST.
Oh，God！ l am also a beginner at ARM programming and I can't compile a simple assembly project getting this error too！But finally l found the solution：
R_IROM1 0x08000000 0x00040000 { ; load region size_region ER_IROM1 0x08000000 0x00040000 { ; load address = execution address *.o (RESET, +First) *(InRoot$$Sections) .ANY (+RO) } RW_IRAM1 0x20000000 0x0000A000 { ; RW data .ANY (+RW +ZI) } }
The _FIRST object that the linker wants to put into the image is the area called RESET. You do not have a RESET region in your code. Add something along the lines of
AREA RESET, DATA, READONLY
to your assembly file where you want execution to begin.
Create a project with the startup file and look for the AREA RESET ..... declaration and copy that.
For Cortex it looks like:
AREA RESET, DATA, READONLY EXPORT __Vectors EXPORT __Vectors_End EXPORT __Vectors_Size __Vectors DCD __initial_sp ; Top of Stack DCD Reset_Handler ; Reset Handler DCD NMI_Handler ; NMI Handler DCD HardFault_Handler ; Hard Fault Handler DCD MemManage_Handler ; MPU Fault Handler DCD BusFault_Handler ; Bus Fault Handler DCD UsageFault_Handler ; Usage Fault Handler DCD 0
Each of those handlers needs to be declared, but you can just add the stack pointer and reset handler to get started.
Hope it helps as well！